Q
Qingkun Liu
Researcher at University of Colorado Boulder
Publications - 76
Citations - 2380
Qingkun Liu is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Liquid crystal & Nanorod. The author has an hindex of 22, co-authored 61 publications receiving 1821 citations. Previous affiliations of Qingkun Liu include Zhejiang University & University of Science and Technology Beijing.
Papers
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Self-alignment of plasmonic gold nanorods in reconfigurable anisotropic fluids for tunable bulk metamaterial applications.
TL;DR: The bulk self-alignment of dispersed gold nanorods imposed by the intrinsic cylindrical micelle self-assembly in nematic and hexagonal liquid crystalline phases of anisotropic fluids results in a switchable polarization-sensitive plasmon resonance exhibiting stark differences from that of the same nanorod in isotropic fluids.
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Topological colloids
Bohdan Senyuk,Qingkun Liu,Sailing He,Randall D. Kamien,Robert B. Kusner,Tom C. Lubensky,Ivan I. Smalyukh +6 more
TL;DR: The role of particle topology in colloidal systems remains unexplored as mentioned in this paper, and the role of the Gauss-Bonnet and Poincare-Hopf index theorems in particle-induced defects has not yet been investigated.
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Electronically integrated, mass-manufactured, microscopic robots
Marc Z. Miskin,Marc Z. Miskin,Alejandro J. Cortese,Kyle Dorsey,Edward Esposito,Michael Reynolds,Qingkun Liu,Michael C. Cao,David A. Muller,Paul L. McEuen,Itai Cohen +10 more
TL;DR: A new class of voltage-controllable electrochemical actuators that are compatible with silicon processing are used to produce over one million sub-hundred-micrometre walking robots on a single four-inch wafer, an important advance towards mass-manufactured, silicon-based, functional robots that are too small to be resolved by the naked eye.
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Electrically and Optically Tunable Plasmonic Guest–Host Liquid Crystals with Long-Range Ordered Nanoparticles
TL;DR: Plasmonic metal nanoparticle analogues of dichroic guest-host liquid crystals allow for collective optical and electrical switching of rod- and platelet-like nanoparticles and facile control of mesostructured plAsmonic medium's optical properties in visible and infrared spectral ranges is of interest for many applications.
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Metal nanoparticle dispersion, alignment, and assembly in nematic liquid crystals for applications in switchable plasmonic color filters and E-polarizers.
TL;DR: It is demonstrated that molecular-colloidal organic-inorganic composites formed by liquid crystals and relatively dilute dispersions of orientationally ordered anisotropic gold nanoparticles, such as rods and platelets, can be used in engineering of switchable plasmonic polarizers and color filters.